He became convinced that they exist while studying the footprints.

他在研究这些脚印的过程中越发坚信野人的存在。

youdao

During this time, he became convinced that focusing on nutrition and optimal supplementation could benefit the lives of more people.

在这段时间，曾润海博士逐渐相信，专心从事营养学及最佳营养补充品研究，将可造福更多的人。

youdao

Bowman's wife and two daughters had died before him and he became convinced that when he died, his entire family would be reincarnated together.

伯尔曼的妻子和2个女儿在他之前就已经死了，他坚信当他死时，他所有的家人将会一起重生。

youdao

Increasingly, he became convinced that religion, in some form or other, was a necessary part of human existence.

ECONOMIST: Leszek Kolakowski

As the battle for control intensified, he became convinced that his critics were interested only in destroying him.

ECONOMIST: Financial mergers

But after speaking with organizers he became convinced that they were determined to teach people how to use the technology responsibly.

WSJ: Stadium Seating for Internet Morals